I came in here to ask very similar questions. Mine are, why did they decide to change it? And where does it derive from?
Also, something I was wondering. if you can cross a Lampropeltis getula with an Elaphe (Not accepting Pantherophis just yet) getutta wouldn't that mean that we would have to change one or the other to Lampropeltis or Elaphe? Refering to jungle corns. I thought two animals of different genus couldn't breed?